The pores are significant factors to assess the fracture system of a shale reservoir. The present study evaluates organic matter-associated parameters, redox condition, paleoclimate and paleosalinity and their role on the pore structure of thermally mature Kommugudem shale of Krishna Godavari Basin. The XRD analysis supported by FE-SEM mainly indicates silica-dominated lithotype and clay-rich siliceous mudstone in the Kommugudem Formation. Intercrystalline and intracrystalline pores were observed in association with mineral and organic matter that provide storage sites for hydrocarbon. Excellent TOC content and genesis of gas prone, type III kerogen dominantly observed in admixture with type II or type IV kerogen. The clay, TOC and Tmax have a positive correlation with micropore volume indicating a good contribution of clay micropore and associated organic matter. Fractal dimensions were estimated using the fractal FHH method with an average value of 2.65 suggesting that the pore surfaces are rough and exhibit complex and heterogeneous pore structure. The Kommugudem Formation constitutes detrital sediments sourced from felsic volcanic rocks in humid and warm climate along the passive tectonic continental margin. The redox and paleosaline investigations reveal the fluvio-marine transitional environment preserved under suboxic to oxic conditions. The REEs and trace elements are positively correlated with pore volume indicating their possible role in the pore genesis of silicate minerals and corroborating the positive influence of the environment. The redox proxies are strongly correlated with TOC and pore volume supports the probable development of organopores. The investigation reveals the significant role of multiproxy paleoenvironmental indices to understand the complex mechanism of pore characteristics.

孔隙是评价页岩储层裂缝系统的重要因素。本研究评估了有机质相关参数、氧化还原条件、古气候和古盐度及其对 Krishna Godavari 盆地热成熟 Kommugudem 页岩孔隙结构的影响。FE-SEM 支持的 XRD 分析主要表明 Kommugudem 组中以二氧化硅为主的岩型和富含粘土的硅质泥岩。观察到晶间和晶内孔与为碳氢化合物提供储存场所的矿物和有机质有关。优良的 TOC 含量和产气倾向，在与 II 型或 IV 型干酪根混合中主要观察到 III 型干酪根。粘土，TOC 和 Tmax 与微孔体积呈正相关，表明粘土微孔和相关有机质的良好贡献。使用分形 FHH 方法估计分形维数，平均值为 2.65，表明孔隙表面粗糙，表现出复杂且不均匀的孔隙结构。Kommugudem 组构成的碎屑沉积物来源于被动构造大陆边缘的潮湿和温暖气候中的长英质火山岩。氧化还原和古盐分研究揭示了在低氧到好氧条件下保存的河-海过渡环境。REE 和微量元素与孔隙体积呈正相关，表明它们可能在硅酸盐矿物的孔隙成因中发挥作用，并证实了环境的积极影响。氧化还原代理与 TOC 密切相关，孔体积支持有机孔的可能发展。调查揭示了多代理古环境指数在理解孔隙特征的复杂机制方面的重要作用。